Investigations on the Performance of Grounding Device with Spike Rods (GDSR) with the Effects of Soil Resistivity and Configurations

Abdul Wali Abdul Ali, Nurul Nadia Ahmad, Normiza Mohamad Nor, Nur Farahi Idris and Farhan Hanaffi
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Abdul Wali Abdul Ali: Faculty of Engineering, Multimedia University, Jalan Multimedia, Cyberjaya 63100, Malaysia
Nurul Nadia Ahmad: Faculty of Engineering, Multimedia University, Jalan Multimedia, Cyberjaya 63100, Malaysia
Normiza Mohamad Nor: Faculty of Engineering, Multimedia University, Jalan Multimedia, Cyberjaya 63100, Malaysia
Nur Farahi Idris: Faculty of Engineering, Multimedia University, Jalan Multimedia, Cyberjaya 63100, Malaysia
Farhan Hanaffi: Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka (UTeM), Melaka 76100, Malaysia

Energies, 2020, vol. 13, issue 14, 1-31

Abstract: In a recently published work, the characteristics of a new grounding device with spike rods (GDSR) with various arrangements of ground electrodes under high magnitude impulse currents (up to 16 kA), was investigated. In an earlier study, the ground electrodes were installed in low resistivity test media, with resistance at steady state (Rdc) values ranging from 11 ? to 75 ?. In practice, various soil resistivity, ranging from a few Ohm-metres to several kiloOhm-metres, have been reported in the standards. It is, therefore, necessary to investigate the characteristics of GDSR with different arrangements of ground electrodes in various soil resistivities under high impulse currents. In this present paper, six configurations of ground electrodes are used, installed at three different sites and subjected to high impulse conditions. Impulse test data of all the grounding systems are analyzed. The Finite Element Method (FEM) is used to compute the electric field values of the ground electrodes achieved. It is found that the highest electric field occurs in the presence of electrodes with the highest Rdc, soil resistivity and current magnitudes. This new data would be useful in bolstering the performance of GDSR in various types of soil resistivities, electrode arrangements and current magnitudes, which may allow for optimum design of grounding systems.

Keywords: earthing systems; electrode geometry; fast-impulses; high-magnitude currents (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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